Home / 398,512,520.46-549,950,857.56-219,904,352.55

Finding the Fourth Proportional to 398,512,520.46, 549,950,857.56 and 219,904,352.55

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Solution

The fourth proportional to 398,512,520.46, 549,950,857.56 and 219,904,352.55 is: 303,469,981.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,512,520.46 : 549,950,857.56 = 219,904,352.55 : x
  2. Step 2: Convert to fraction form
    398,512,520.46/549,950,857.56 = 219,904,352.55/x
  3. Step 3: Cross multiply
    398,512,520.46x = 549,950,857.56 × 219,904,352.55
  4. Step 4: Simplify right side
    398,512,520.46x = 120,936,587,266,049,072
  5. Step 5: Solve for x
    x = 120,936,587,266,049,072/398,512,520.46
  6. Step 6: Final answer
    x = 303,469,981.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.